Adafruit 757 Logic Level Converter I2C Safe Bi Directional 4 Channel

Because Arduino boards are powered by 5V, but most sensors, displays and flash cards only 3.3V, many hobbyists realize they need to adjust the level This breakout board has 4 BSS138 field effect transistors with 10kΩ pull-up resistors Voltage conversion is 1.8V on one end and up to 10V on the other Designed for use with I²C, the card also works for TTL serial interfaces, slow SPI and other digital, unidirectional and bidirectional interfaces less than 2MHz The fully assembled and tested printed circuit board comes with 4 fully bi-directional voltage converters and 2 six-pin headers that can be soldered to the board to place it on a breadboard